JP2022540205A - syringe tip cap - Google Patents

Abstract

Syringe tip caps are described herein. Such a syringe tip cap may include a distal wall, a side wall extending proximally from the distal wall to define a chamber, the chamber configured to surround the elongated tip of the syringe. A distal wall may be attached to the side wall via a hinge.

Description

The present disclosure generally provides a physical barrier to securely seal the tip of a hypodermic syringe barrel, prevent the syringe tip from contacting the surrounding non-sterile environment, and allow one-handed removal of the syringe tip cap. It relates to a syringe tip cap comprising:

Pre-filled syringe tip caps currently available on the market require the use of two hands to remove the tip cap. Requiring two hands can cause complications during clinical use. After removing the tip cap, the catheter connecting the syringe should be disinfected with a medical device (e.g., alcohol swab), so members of the medical staff already use one hand when the tip of the syringe needs to be removed. is doing. A syringe tip cap that provides a one-handed opening mechanism helps facilitate workflow.

Currently, existing syringe tip caps have threaded connections, making it difficult or impossible to open and remove existing tip caps with one hand. Thus, currently existing syringe tip caps require two hands to operate, one hand for holding the syringe and the other for removing the cap. A conventional flush syringe has a barrel with a luer tip on one end, which exposes the syringe tip to a non-sterile environment once it is removed from the tip cap, which can lead to unwanted contamination. As a result, syringe tip caps are needed to provide a physical barrier that promotes aseptic technique by reducing or eliminating "contact" contamination of the syringe, particularly the syringe tip, with the surrounding non-sterile environment. There is also a need for a syringe tip cap that allows the clinician to open the protective syringe tip cap with one hand without the operating hand being in close proximity to the tip of the syringe. In addition to improving safety, such one-handed operation would greatly improve workflow and efficiency.

One aspect of the present disclosure is a body having an annular sidewall having an inner surface defining a chamber, an open proximal end, a closed distal end including a distal wall, a protruding boss having a finger contact surface, and a distal wall. and includes a collar having internal dimensions for mating with the distal tip of a syringe.

In one or more embodiments, the chamber is configured to surround the elongated tip of the syringe.

In one or more embodiments, the collar includes one or more tapered protruding sidewalls.

In one or more embodiments, the annular sidewall includes one or more tapers.

In one or more embodiments, the finger contact surface has a stepped, scalloped, or sloped configuration to improve grip.

A second aspect of the present disclosure is a body having an annular sidewall having an inner surface defining a chamber, an open proximal end, a closed distal end including a distal wall, and a protruding boss having a finger contact surface. , a syringe tip cap including a finger stop located on a protruding boss and a collar located on the inner surface of the distal wall and having internal dimensions for mating with the distal tip of a syringe.

In one or more embodiments, a finger stop is located on a protruding boss at the distal end of the body of the tip cap.

In one or more embodiments, the finger stop is positioned along the length of the protruding boss near the center of the protruding boss.

A third aspect of the present disclosure is a body having a distal end including a distal wall and sidewalls extending proximally from the distal wall with an open proximal end for receiving an open elongated syringe tip. a lid, a hinge attaching the lid to the sidewall, and a locking element that engages a corresponding mating locking projection on the cap.

In one or more embodiments, the hinge is a living hinge.

In one or more embodiments, the hinge is butterfly-shaped with a central hinge portion and two lateral wings.

In one or more embodiments, the locking elements are shaped in the form of arms or dimples.

In one or more embodiments, the hinge opens between a fully closed position and a fully open position of at least 120 degrees.

1 shows a perspective view of a syringe tip cap according to a first embodiment of the present disclosure; FIG. FIG. 2 shows a cross-sectional view of a syringe tip cap according to a first embodiment of the present disclosure; 3 shows a perspective view of an alternative embodiment of the syringe tip cap shown in FIG. 1; FIG. FIG. 4 shows a perspective view of a syringe tip cap according to the first embodiment of the present disclosure placed on a syringe; FIG. 5 shows a cross-sectional view of a syringe tip cap according to the first embodiment of the present disclosure placed on a syringe; FIG. 6 shows a side view of an alternate embodiment of the syringe tip cap according to the first embodiment of the present disclosure; FIG. 7 shows a side view of yet another alternative embodiment of the syringe tip cap according to the first embodiment of the present disclosure; FIG. 8 shows a side view of a syringe tip cap according to a second embodiment of the present disclosure; FIG. 9 shows a perspective view of a syringe tip cap according to a second embodiment of the present disclosure; FIG. 10 shows a perspective view of a syringe tip cap according to a second embodiment of the present disclosure placed on a syringe; FIG. 11 shows a cross-sectional view of a syringe tip cap according to a third embodiment of the present disclosure;

Before describing several exemplary embodiments of the present disclosure, it is to be understood that the present disclosure is not limited to the details of construction or process steps set forth in the following description. The disclosure is capable of other embodiments and of being practiced or of being carried out in various ways.

The following definitions are provided for terms used in this disclosure.

References to "pre-filled syringe assembly" include syringes in which the barrel is filled prior to delivery of the solution or medicament to the user during or after assembly of the syringe using sterile filling techniques. Pre-filled syringe assemblies include syringe assemblies that are indicated for use in flushing vascular access devices (VADs).

As used herein, the use of "a," "an," and "the" includes singular and plural forms.

As used herein, the term "luer connector" refers to a connecting collar that is a standard way of attaching syringes, catheters, hubbed needles, IV tubing, etc. to each other. Luer connectors consist of male and female interlocking tubes that are slightly tapered to provide a better connection with just a simple push/twist fit. The luer connector can optionally include an outer rim of threads to make it more secure. The male end of the luer connector is typically associated with a flush syringe and can be mated and connected to the female end on the VAD. The luer connector includes a distal end, a proximal end, an irregularly shaped outer wall, and a profiled central passageway for fluid communication from the chamber of the barrel of the syringe to the hub of the VAD. The luer connector also has a distal end channel that removably attaches the luer connector to the hub of the VAD and a proximal end channel that removably attaches the luer connector to the barrel of the syringe.

Clinicians handle multiple components while accessing an intravenous (IV) line or catheter: opening and disinfecting hubs, opening syringes, holding lines in place, etc. with fatal consequences None of the devices should touch surfaces during this time, as this leads to possible contamination and bloodstream infections. Therefore, access to an intravenous (IV) line or catheter is not trivial and requires a degree of dexterity so that the procedure can be performed while preventing the tip of the syringe from contacting the surrounding environment. "Contact" contamination occurs when the syringe tip touches an unsterilized surface, causing microbial growth in the IV line, resulting in catheter-associated bloodstream infections ("CRBSI") and central line-associated bloodstream infections. (“CLABSI”), which is very costly and fatal.

An embodiment of the present disclosure relates to a syringe tip cap that encloses an elongated distal tip of a syringe that includes a pre-filled syringe assembly. A collar provides a physical barrier around the syringe tip.

1-7, the syringe tip cap 10 according to the first aspect of the present disclosure generally defines an annular sidewall 12 having an inner surface 14 defining a chamber 16 configured to receive a luer connector 52 of a syringe 50. A distal end 20 comprising a body having an open proximal end 18 and a distal wall 22 is a protruding boss 24 having a finger contacting surface 26 .

As shown in FIGS. 1-3, the distal wall 22 has a centrally located collar 30 having a protruding side wall 31 forming an internal cavity 32 configured to wrap around the elongated tip 54 of the syringe 50; It includes an open proximal end 33 and a distal end 34 adjacent the distal wall 22 of the tip cap 10 . In one or more embodiments, collar 30 is a protrusion that extends outwardly from inner surface 11 of distal wall 22 of tip cap 10 . In one or more embodiments, collar 30 is adapted to connect to an elongated tip or hub of a vascular access device.

As shown in FIGS. 2 and 5 , chamber 16 is configured to receive luer connector 52 of syringe 50 and internal cavity 32 is configured to wrap around elongated tip 54 of syringe 50 . Specifically, projecting side wall 31 of collar 30 is configured to contact elongated tip 54 of syringe 50 . In one or more embodiments, protruding sidewalls 31 create an interference fit with elongated tip 54 . In one or more embodiments, the protruding sidewall 31 fluidly seals the elongated tip 54 . The inner surface 14 of the annular sidewall 12 is configured to contact the outer collar 56 of the syringe 50, which extends from the distal wall 57 of the syringe. In one or more embodiments, the inner surface of annular sidewall 12 creates an interference fit with elongated tip 54 . In one or more embodiments, the protruding sidewall 31 fluidly seals the elongated tip 54 .

In one or more embodiments, the syringe tip cap further includes a centrally located pin or button-shaped protrusion 13 . Protrusion 13 is disposed on inner surface 11 of distal wall 22 and extends proximally into internal cavity 32 . Prong 13 is sized and configured to fluidly block lumen 55 of elongated tip 54 of syringe 540 . In one or more embodiments, protrusion 13 has a diameter equal to or slightly larger than the diameter of lumen 55 of elongated tip 54, thereby fluidly covering lumen 55. . In one or more embodiments, projection 13 has a diameter equal to or slightly smaller than the diameter of lumen 55 of elongated tip 54 such that projection 13 protrudes slightly into lumen 55. configured to thereby fluidly seal lumen 55 by contacting the inner surface of lumen 55 .

As shown in FIGS. 2 and 5, collar 30 seals distal tip 51 of syringe assembly 50 to prevent leakage when tip cap 10 is placed on the distal tip of the syringe assembly. Collar 30 prevents leakage after cap 10 is closed until the syringe is filled and cap 10 is opened before use. In one or more embodiments, as shown in FIGS. 2 and 5, protruding sidewalls 31 of collar 30 enable collar 30 to seal the distal elongated tip opening of a syringe or syringe assembly. It may be tapered, oriented, configured and/or shaped to do so. 2 and 5, because of its shape, the tapered proximal end of sidewall 31 of collar 30 facilitates alignment of the distal tip of the syringe, thus reducing the potential for "contact" contamination. help reduce Collar 30 helps align the elongated tip with other luer devices, such as needleless connectors, and protects the elongated tip from contact contamination. Without the embodiments of the present disclosure, luer tip alignment requires careful attention and visual precision so that the tip cap and the distal tip of the syringe can be perfectly aligned so that no contamination occurs.

As seen in FIGS. 1-3 and 5, the protruding sidewall 31 of collar 30 has a tapered proximal end 35 that provides a tapered seal. 2 and 5, the entry angle of the tapered protruding side wall 31 of the collar 30 and the entry angle of the tapered inner wall surface of the annular side wall of the tip cap and the distal end of the tip cap and syringe 50 and the barrel of the syringe. creates a tapered seal between In one or more embodiments, the elongated tip of the syringe can be a luer tip. These seals ensure that both the inner cavity of the tip cap and the distal end of the syringe are sterile and that the syringe is capped and contains the pre-filled liquid of the syringe barrel. This type of seal also allows for one-handed removal when combined with a "push-off mechanism" that the user uses to remove the cap as described below.

In one or more embodiments, the inner diameter and taper angle of the tapered inner wall surfaces of the tapered protruding side wall 31 of the collar 30 and the annular side wall 12 of the tip cap 10 are varied to affect the interference fit with the syringe; Therefore, the sealing effect can be improved.

The tapered protruding side wall 31 of the collar 30 and the tapered inner wall surface of the annular side wall 12 of the tip cap 10 ensure that the tip cap 10 is pushed out rather than unscrewed as required when threads are involved. can be removed. Depending on the interface of these surfaces, a seal is created to ensure that the entire area contained within the collar cavity 32 and the chamber 16 of the tip cap 10 maintains the integrity of the container closure. can be done.

The protruding boss 24 includes a finger contact surface 26 extending away from the annular sidewall 12 of the tip cap 10, the finger contact 26 applying a digital force to the finger contact surface 26 to cause the tip cap to disengage. It is configured to allow one-handed movement of 10 from a closed, sealed position to an open, unsealed position to remove the tip cap from the barrel of the syringe. This is accomplished with one hand by holding the syringe assembly sealed by the tip cap 10 with one hand and applying finger force distally against the finger contact surface 26 with the thumb or forefinger of the holding hand. In one or more embodiments, as shown in FIGS. 1 and 2, the finger contact surface is stepped to improve grip configuration to improve grip when a user places a finger on the finger contact surface. It may have a stepped, scalloped or graded configuration.

As seen in FIG. 3 , in one or more alternative embodiments, wedges or ribs 40 are formed on the inner surface of distal wall 22 in a direction extending outwardly from the collar toward the inner surface of annular wall 12 . can be placed in As shown in FIG. 3, wedges or ribs 40 may be arranged in a hub-and-spoke fashion with respect to the collar to resemble a small umbrella. The wedge or rib 40 provides structural integrity to the tip cap 10 and also helps improve interference or friction fit with the distal end of the syringe barrel and/or luer tip, resulting in interference or The frictional force due to the friction fit is greater than the force exerted on tip cap 10 during any post-assembly process (sterilization, shipping, handling, etc.). In one or more embodiments, the tip cap 10 may further include a gasket 60 on the inner surface of the annular side wall 12 of the tip cap or the outer surface of the collar 30 to create a tight seal to maintain sterility. .

As shown in FIGS. 4 and 5, the tip cap 10 has an interference or friction fit with the distal end of the syringe barrel and/or luer tip such that the frictional force due to the interference or friction fit is greater than the forces exerted on tip cap 10 during any post-assembly process (sterilization, shipping, handling, etc.). Even so, the friction force is still reasonably low, and the user can remove it with one hand, such as by pressing his thumb.

The material of the tip cap 10 must be sufficiently stiff to retain its structural integrity when the tip cap is axially extruded during opening and will not bend or buckle. do not do. Syringe 50, tip cap 10, and collar 30 may be manufactured from suitable medical grade materials including polymers or metals. Preferably, tip cap 10 and collar 30 are injection molded using a thermoplastic and/or thermoplastic elastomer (TPE).

In a second aspect of the present disclosure, a tip cap 100 that slips over a pre-filled syringe 150 with a luer tip is disclosed. The tip cap 100 can seal the fluid pathway and act as a sterile barrier between the fluid pathway and the environment. The sealing surface of the tip cap has circular symmetry about the axis to seal the fluid path of the prefilled syringe. 8-10, a syringe tip cap 100 according to a second aspect of the present disclosure includes an annular sidewall 112 having an inner surface 114 defining a chamber 116 configured to receive an elongated tip syringe and an open proximal end. It generally comprises a distal end 120 having an edge 118 and a distal wall 122 and a protruding boss 124 having a finger contacting surface 126 .

As shown in FIGS. 6-10, the outer surface of the tip cap 100 has a flat protruding boss 124 that begins at the top of the annular side wall 112 of the tip cap 100 and extends downward to have a finger contact surface 126 . , which is used as a “handle” for removing the tip cap from the syringe assembly 150 .

In one or more embodiments, a finger stop 180 is positioned on the protruding boss 124 . In one or more embodiments, as shown in FIGS. 6 and 7, finger stop 180 is disposed on protruding boss 124 at the distal end of tip cap 100 protruding vertically from protruding boss 124. . In one or more embodiments, as shown in FIGS. 6 and 7, the length of finger stops 180 may vary. In one or more embodiments, finger stops 180 are positioned along the length of protruding boss 124 near the center of protruding boss 124, as shown in FIGS. As shown in FIGS. 8 and 9, thumb stop 180 extends and protrudes perpendicularly from the surface of protruding boss 124, thereby forming a "T" with protruding boss 124. As shown in FIGS. As shown in FIG. 10, finger stop 180 is used as a thumb guard and both protruding boss 124 and finger stop 180 are used to hold tip cap 100 "upward" when assembled on a pre-filled syringe. Or it can be pushed distally, which will slide the tip cap 100 out of the pre-filled syringe 150 . Finger stop 180 is positioned to prevent accidental contact with the distal tip of the syringe barrel.

In one or more embodiments, the distal wall 122 is a distal wall adjacent the elongated tip of the syringe assembly, the open proximal end (not shown), and the distal wall (not shown) of the tip cap 100 . It may include a centrally located collar (not shown) having protruding sidewalls (not shown) forming an internal cavity (not shown) configured to wrap around edges (not shown). In one or more embodiments, the collar (not shown) is a protrusion that extends outwardly from the inner surface of the distal wall (not shown) of tip cap 100 . In one or more embodiments, a collar (not shown) is adapted to connect to an elongate tip or hub of a vascular access device.

A collar (not shown) seals the distal tip (not shown) of the syringe assembly (not shown) to prevent leakage when the tip cap 100 is placed on the distal tip of the syringe assembly. . A collar (not shown) prevents leakage after the syringe is filled and the cap 100 is closed until the cap 100 is opened before use. In one or more embodiments, the collar may be in the shape of a pin or button. In one or more embodiments, the protruding side walls (not shown) of the collar (not shown) allow the collar (not shown) to seal the distal elongated tip opening of the syringe or syringe assembly. may be tapered, oriented, configured and/or shaped to allow for Because of its shape, the tapered proximal end of the side wall (not shown) of the collar (not shown) facilitates alignment of the distal tip of the syringe, thus allowing for "touch" contamination. Helps reduce sexuality. A collar (not shown) helps align the elongated tip with other luer devices, such as needleless connectors, and protects the elongated tip from contact contamination. Without the embodiments of the present disclosure, luer tip alignment requires careful attention and visual precision so that the tip cap and the distal tip of the syringe can be perfectly aligned so that no contamination occurs.

A protruding sidewall (not shown) of collar 130 has a tapered proximal end (not shown) to provide a tapered seal. The entrance angle of the tapered protruding side wall (not shown) of the collar (not shown) and the tapered inner wall surface of the annular side wall of the tip cap are similar to the barrel of the syringe. creates a tapered seal between the distal end of the In one or more embodiments, the elongated tip of the syringe can be a luer tip. These seals ensure that both the inner cavity of the tip cap and the distal end of the syringe are sterile and that the syringe is capped and contains the pre-filled liquid of the syringe barrel. This type of seal also allows for one-handed removal when combined with a "push-off mechanism" that the user uses to remove the cap as described below.

In one or more embodiments, the inner diameter and taper angle of the tapered protruding side wall (not shown) of the collar (not shown) and the tapered inner wall surface of the annular side wall (not shown) of the tip cap 100 are , can be varied to affect the interference fit with the syringe and thus improve seal effectiveness.

In one or more embodiments, the tapered inner wall surface of the protruding side wall (not shown) of the collar (not shown) and the annular side wall (not shown) of the tip cap 100 may be necessary when threads are involved. The tip cap 100 can be securely removed by pushing it out rather than unscrewing it. Responsive to the interface on these surfaces, the entire area contained within the cavity (not shown) of the collar and chamber (not shown) of tip cap 100 maintains the integrity of the container closure by creating a seal. can be ensured.

A protruding boss 124 extends from the finger contacting surface 126 from the annular side wall 112 of the tip cap 100 for applying a digital force to the finger contacting surface 126, and a finger contacting surface 126 to open and unseal the tip cap 10 from the closed sealing position. and a finger stop 180 that allows one-handed movement into position to allow removal of the tip cap from the barrel of the syringe. This is accomplished with one hand by holding the syringe assembly sealed with tip cap 100 in one hand and applying finger force distally to finger contact surface 126 and finger stop 180 with the thumb or forefinger of the holding hand. be. The user is protected from accidental needle sticks by pushing tip cap 100 distally using finger stop 180 . In one or more embodiments, the finger contact surface is stepped, scalloped or sloped to improve grip configuration to improve grip when a user places a finger on the finger contact surface. (graded).

In one or more alternative embodiments, the wedges or ribs (not shown) are arranged on the distal wall (not shown) in an orientation extending outwardly from the collar toward the inner surface of the annular wall (not shown). It can be placed on the inner surface. Wedges or ribs (not shown) may be arranged in a hub and spoke fashion with respect to the collar, like a small umbrella. Wedges or ribs (not shown) provide structural integrity to the tip cap 100 and also serve to improve interference or friction fit with the distal end of the syringe barrel and/or luer tip, As a result, frictional forces due to interference or friction fit are greater than the forces exerted on tip cap 100 during any post-assembly process (sterilization, shipping, handling, etc.). In one or more embodiments, tip cap 100 additionally includes a gasket (not shown) on the inner surface of the tip cap annular sidewall (not shown) or the outer surface of the collar (not shown) to provide sterility. Strict seals can be created to maintain

As shown in FIG. 10, the tip cap 100 has an interference or friction fit with the distal end of the syringe barrel 150 and/or luer tip such that frictional forces due to the interference or friction fit are greater than the forces exerted on tip cap 100 during any subsequent processes (sterilization, shipping, handling, etc.). Even so, the friction force is still reasonably low, and the user can remove it with one hand, such as by pressing his thumb.

The material of the tip cap 100 must be sufficiently stiff to retain its structural integrity when the tip cap is axially extruded during opening and will not bend or buckle. do not do. Syringe 150, cap 100, and collar 130 may be manufactured from suitable medical grade materials including polymers or metals. Preferably, tip cap 100 and collar 130 are injection molded using a thermoplastic and/or thermoplastic elastomer (TPE).

An exemplary embodiment of the tip cap of the second aspect of the present disclosure provides a one-handed opening mechanism for pre-filled syringes. Because the tip cap 100 interferes with the syringe barrel and luer, the frictional forces from the interference are greater than the forces exerted on the tip cap during any of the post-assembly processes (such as sterilization, shipping, and handling). Even so, the friction force is still reasonably low, and the user can remove it with one hand, such as by pressing his thumb.

The material of the tip cap 100 must be sufficiently stiff to retain its structural integrity when the tip cap is axially extruded during opening and will not bend or buckle. do not do. Syringe 150, cap 100, and collar may be manufactured from suitable medical grade materials including polymers or metals. Preferably, the cap is injection molded using thermoplastic and/or thermoplastic elastomer (TPE).

A third aspect of the present disclosure relates to a tip cap 200 for a pre-filled saline syringe with an extended barrel that protects the luer tip from accidental contact contamination during needleless connector opening and connection. As shown in FIG. 11, the tip cap 200 provides a one-handed removal that allows the clinician to remove the cap with one hand, preventing accidental contamination of the connector hub or luer tip when opening the syringe. To enable the connector to be held by a second hand without having to hold the connector. Before use, as shown in FIG. 11, the tip cap 200 creates a sterile barrier while using an interference fit that allows the tip cap 200 to remain attached to the barrel of the syringe 250 after use. fixed. When opened, the tip cap locking arm 300 locks into a notch 400 in the side wall of the barrel to prevent the loose tip cap 200 from being lost and prevent the clinician from recapping the syringe.

As shown in FIG. 11, in one or more embodiments, the tip cap 200 includes a lid 700 attached to the side walls of the cap via hinges 800 so that the tip cap 200 remains in place after use. It remains attached to the barrel of the syringe 250, which ensures that the tip cap 200 cannot be lost between patient beds, floors, etc. and the syringe cannot be recapped for reuse.

In one or more embodiments, hinge 800 is a living hinge. In one or more embodiments, tip cap 200 is a flip-open cap. In one or more embodiments, tip cap 200 includes sidewalls defining a longitudinal opening and a top wall between the sidewalls defining a recess having an interior surface. The tip cap 200 can be pivoted from an open position exposing the elongated tip of the syringe. In one or more embodiments, collar 30 and lid 700 can be molded together and then assembled with a syringe barrel. In one or more embodiments, the syringe barrel can include a protective sleeve 900 attached to the distal wall of the barrel and surrounding the elongated tip. The protective sleeve includes at least one sidewall having an inner surface defining a compartment, an open distal end, and a proximal end adjacent the distal wall of the barrel. Hinge 800 functions to stay in place when hinge 800 is opened. In one or more embodiments, the hinge 800 has a butterfly shape that acts as a hinge and snaps into place a central section that acts as a hinge and two wings on the sides. It is also envisaged to change the shape of the hinge to create an easier attachment to the barrel. In one or more alternative embodiments, a "zip tie" like feature can be used to slide the cap open from the luer tip.

In one or more alternative embodiments, hinge 800 opens between a fully closed position and a fully open position of at least 120 degrees. In one or more embodiments, hinge 800 is the element that keeps the cap attached to the barrel after opening.

Locking arm 300 and notch 400 not only ensure that tip cap 200 is not lost after use, but also ensure that the syringe is not recapped for another use. The locking arm 300 is wedged into a notch 400 located in the side wall of the barrel using a press fit or snap-in feature.

In one or more embodiments, the structure for automatically locking the tip cap 200 includes at least one locking arm 300 and notch 400 located on the outer surface of the sidewall of the barrel or around the distal tip. It includes an extending protective sleeve 900 . Locking arm 300 includes a free end positioned such that the free end of the arm engages a corresponding mating locking notch 400 on the outer surface of the collar when tip cap 200 is pivoted to the open position.

The inner surface of the distal wall of cap 200 has outwardly extending protrusions 500 that block the luer tip and prevent leakage when the cap is closed. In one or more embodiments, protrusion 500 may be in the shape of a pin or button, as seen in FIG. The outwardly extending projections 500 prevent leakage after the syringe is filled and the cap 200 is closed until the cap 200 is opened before use. In one or more embodiments, as seen in FIG. 11, the outwardly extending protrusions or pins are oriented, configured, and configured to allow the protrusions 500 to enter openings in the distal end of the elongated tip. and/or can be molded. Other embodiments can further include a gasket feature between the collar and flip open cap to create a tight seal to maintain sterility. In one or more embodiments, the elongate tip can be a luer tip.

The tip cap 200 is opened in one step by the user pushing up on the finger stop 280 with his thumb. In one or more embodiments, finger stop 280 has a surface texture to improve friction with the user's thumb.

In one or more embodiments, the tip cap 200 can be easily opened by flipping it backwards (the user's thumb lifts away from the elongated tip), and the tip cap 200 provides a minimal level of sterility assurance. Tight enough to serve. The one-step opening process is designed so that the user's thumb does not need to be repositioned while the tip cap 200 is in operation, allowing the user to remove the hermetic seal in one step, making tip cap 200 easy to open. allow you to remove it at any time.

Tip cap 200 may be manufactured from suitable medical grade materials including polymers or metals. Preferably, tip cap 200 is injection molded using a thermoplastic and/or thermoplastic elastomer (TPE).

The syringe assembly (50, 150, 250) may be filled with flush solution using known methods. Additionally, the syringe assembly (50, 150, 250) may be provided pre-filled from a manufacturer or supplier. The flush solution can be any solution intended to maintain the solution for cleaning or to maintain the performance of the VAD. The flush solution is preferably selected from the group consisting of a saline flush solution and a heparin lock flush solution. These solutions are known in the art and readily available. Examples of saline flush solutions include, but are not limited to, 0.9% Sodium Chloride USP for Injection. Examples of heparin lockflush solutions include, but are not limited to, 100 USP units per mL of sodium heparin or 0.9% sodium chloride with 10 USP units per mL of sodium heparin.

FIG. 11 illustrates a perspective view of a flush syringe with flip tip cap 200 in the closed position, according to one or more embodiments of the present disclosure. A syringe assembly is also provided that includes a plunger rod and a syringe barrel with an open proximal end and a distal tip, the distal syringe tip facilitating alignment of the syringe with the tip cap 200, as shown in FIG. It is surrounded by a protective sleeve that facilitates and reduces contamination of the syringe by preventing the tip of the syringe from coming into contact with the surrounding non-sterile environment.

The barrel may also include a tip extending distally therefrom. The tip of the barrel may include a luer slip connection or a luer-type collar that concentrically surrounds or secures within the tip.

As shown in FIG. 11, elongated plunger rod 600 can include a distal portion and a proximal portion. An elongated plunger rod 600 may be positioned within the barrel of syringe 250 . Plunger rod 600 includes an elongated body portion having proximal and distal ends.

An elongated body portion of the plunger rod has an axial length extending from the proximal end to the distal end. The plunger rod can also include a thumb depressor 610 at the proximal end of the elongated body portion. The shape of the thumb press may vary depending on the desired use of the flash syringe assembly. The shape of the thumb pressing portion can be circular, square, rectangular, triangular, oval, pentagonal, hexagonal, cross-shaped.

The plunger rod slides into the barrel such that the stopper is in fluid-tight contact with the inner surface of the barrel and movement of the plunger rod distally relative to the barrel causes the stopper to expel fluid from the barrel. positioned as possible. In some embodiments, the stopper is slidably disposed in fluid-tight contact with the inner surface of the barrel such that movement of the stopper relative to the barrel forces fluid out of the chamber.

The plunger rod may be made of a harder material than the stopper, such as polypropylene, polyethylene or the like. Materials should be chosen to be compatible with the procedure used.

Although the disclosure has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the disclosure. It is therefore to be understood that many modifications may be made to the exemplary embodiments and other arrangements may be devised without departing from the spirit and scope of the disclosed disclosure.

Claims (16)

a body having an annular sidewall having an inner surface defining a chamber, an open proximal end, and a closed distal end including a distal wall;
a protruding boss having a finger contact surface;
said chamber configured to receive an elongated tip syringe;
a collar disposed on the inner surface of the distal wall having an inner dimension for mating with the distal tip of a syringe;
including a syringe tip cap. A syringe tip cap according to claim 1, wherein the collar includes one or more tapered protruding sidewalls. A syringe tip cap according to claim 1, wherein the annular sidewall includes one or more tapers. 2. The syringe tip cap of claim 1, wherein the finger contact surface has a stepped, scalloped, or graded configuration for improved grip. a body having an annular sidewall having an inner surface defining a chamber, an open proximal end, and a closed distal end including a distal wall;
a protruding boss having a finger contact surface;
a finger stop positioned on the protruding boss;
said chamber configured to receive an elongated tip syringe;
a collar disposed on the inner surface of the distal wall having an inner dimension for mating with the distal tip of a syringe;
including a syringe tip cap. 6. The syringe tip cap of claim 5, wherein the collar includes one or more tapered protruding sidewalls. 6. The syringe tip cap of Claim 5, wherein the annular sidewall includes one or more tapers. 6. The syringe tip cap of claim 5, wherein the finger contact surface has a stepped, scalloped, or graded configuration for improved grip. 6. The syringe tip cap of claim 5, wherein the finger stop is positioned on the protruding boss of the distal end of the body of the syringe tip cap. 6. The syringe tip cap of claim 5, wherein the finger stop is located along the length of the protruding boss near the center of the protruding boss. A syringe tip cap,
a distal end including a distal wall;
a side wall extending proximally from said distal wall having an inner surface defining a chamber for receiving an elongated tip of a syringe;
an open proximal end;
a lid;
a hinge attaching the lid to the side wall;
a locking element that engages a corresponding mating locking projection on the cap;
including a syringe tip cap. 12. The syringe tip cap of claim 11, wherein said hinge is a living hinge. 12. The syringe tip cap of claim 11, wherein the hinge is butterfly-shaped with a central hinge portion and two side wings. 12. The syringe tip cap of Claim 11, wherein the cap includes one or more thumb supports. 12. A syringe tip cap according to claim 11, wherein the locking element is molded in the form of an arm or dimple. 12. The syringe tip cap of Claim 11, wherein the hinge opens between a fully closed position and a fully open position of at least 120 degrees.

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